Hatch cover



Nov. 20, 1928. 1,692,782

l .l. F. MACKIN HATCH COVER fa 3F l acllg.

2 34H01?) @ya Nov. 20, 1928. 1,692,782

J. F. MAcKlN HATCH covn Filed Jan. 29, 1927 2 sheets-sheet 2 l: sforn@Je @d Figures 14, 15, 16, 17A-and tions at the lines 14e-14, 15-1516-16,

Patented Nov. 20,1928.

UNITED STATES JAMiis F.l n tAcirrN, or CHICAGQZILLINOI'S; AssiGNoa TocHAnLo'rrE x. MA'CKIN,

I ILLINoIsJg- 2 vHTCH-CVEB. Y. Appncauon. and :anni 2s, 1927.v` sum1N.`1e4,4oe. Thepurpose of.this,in vention is to provide an improvedhatch cover ,for vessels and for" use in closing door openlngs 1nsituations corresponding to those of the hatches in the deck 6 of asea-going vessel as in warehouse floors.,

It consists in lthe elements and., features o f construction .showrrand.described as -1nd1- cated in theclaims. In the drawings of a vesseldeck having a hatch provided with a. cover embodying .this invention,the same being shown at. closed position .o f the hatch cover- ,y

Figure 2 longitudinal coaming.

Figure 3 1s a fragmentary detail view inl plan of the stepped guidetrack looking in the directlonindicated by .the arrows, 3, 3,-I

on Figure 2. l Figure 4 is a detail plan view of a. portion oi the hatchwith the cover removed.

Figure 5 is a vertical sec-tion at the plane indicated by the line,5-5on Figurel.- Fi ure 6 is van enlarged verticall section takensubstantiallyat the Aplaneindicated by line 5-5 on Figure 1 showingthecover sections of one-half of the hatch cover in telescoped relation inhatch-.opening position.

Figxfre 7 is a sectional elevation looking in the directionof the arrow,70131 Figure, the side coaming of thehatch being shown in sectiontransverse of thehatchopening.

ure6. Figures 9 and 10 are respectively sections of two co-operatinglocking members mounted on the meeting sections ofthe two halves whenthe hatch covers from opposite ends4 of the hatch `are drawn togetherfor closing-,f

but before said lock members are engaged for their locking function. f"

Figure `12 isa s1m1lar fniew showing the locking rod rocked into lockedposition.

` Figure 13 is a top plan view of the device as shown in Figure 12. v.

18 are @detail'sec- 17-17 and 18-18 respectively, on Figure 5.

Figure 1 isa perspective view of a'portion` `its projecting A Aflange bywhich itis secured tothe coaming,... is an outer side elevation ofthey4Figure is a. section at line `8 8 on Figing at 12. The hatchcovercomprises'two the number being greater or less accordin the extent ofthe hatch or the other requ1re- I'nents.oftheparticularsituation.- .Thecoam'f i' 11, are slopedslightly widening front` thelrv opposlte ends`to the middle of the length ings,

of the hatch openingas usual; and lon their tracks, 13 and l14, theupper track, 13, having flange at right angles to the-t `outer sidesthere are mount-ed angle iron and the lower track, 14, having itsprojecting f angetrendingy downward at'fan obli 11er` which itis securedtothe coaming. Thevsevopposite sidefcoamings, 11, the lower orouterand34, successively embracing eachthev revangle of about-135 tothevertical flange y eral cover sections, `31, 32, 33`and 34,eachg lhave their yend portions. :folded down forming ends,y 31, .3 2, 33a,and.34 respectively, to embrace. between their opposite ends, the,v uend cover section, 31, embracing `said coralli-fj@I ings directly, andthe other sections," 32, 33

kceding section being therefore increase in e longitudinal dimensionbetween their oppositedoWn-:folded ends anamount corres ondopening ofsaid embraced down-.folded ends. .For thus embracing the coamings thecoverv portion of its length transverse tothe length ing to thedimension transversely of the atch,A

of the hatch opening, said right angle bendsl I being folded bysuccessive right Aangle .folds or bends first ata rightangleas seen at.31", opening outwardly vand upwardly, and

thenvvat a r1ght'angle opening downwardly and-back inwardly asseen at31,said end bev an inwardly andupwardly iaclebend, 311., to form thedependf or flange with an outwardly proing folded by ing acute an ingend truding rib, 31-, having an inwardly acin schannel, defined betweenthe bends, 31", anV 31, the acute angle ofthe last mentioned fold f lsurface of the track, 14.` The sections,`32, 33 f being about 45,corresponding to the Aoblique.

and 34 for embracing respectively eaehgthe ,down-folded ends of theimmediately preceding section, have the outwardly and upward-lr d i ly,those at thelower or outer lon ly opening angles 32", 33 and 34",followed respective y by inwardly and downwardly facing angles, or 90bends, 32% 33c and 34, embracing each the corresponding bends of thenext interior section, said last mentioned bends being followedrespectively by bends of more than 90 32", 33 and 34 embracingrespectively the corresponding bends of the next preceding section andformin telescoping c anneled ribs, 32, 33', 34. g.l`he outer or lowerlongitudinal edge lof the cover section, 34, the inner or u perlongitudinal edges of the section,'31, and) the lapped longitudinaledges ofthe intermediate sections, 32 or 33, are provided with hookedflanges, 80, which extend also alon the edges of the down-turned ends ofsaidgs'ections respectiveg1tudina1 edges of the several sections beinginturned, and those of the inner or up er longitudinal ed es beinout-turned, the ower longitudina edge o section, 31,' being providedwith a down-turned straight flange, 81, for engaging the end coaming,13, and the upper longitudinal edge ofthe cover section, 34, beingprovided with an up-'turned plain flange, 82,

or mating and forming water-tight junction with alike flange 82 of 'thecorresponding cover section of the opposite half of the hatch.

' "From this description it will be understood .fiber or that at closedposition of the cover sections the in'turned` under-side hook flanges-ofeach section en 'agle'th'e out-turned upper side hook flanges o t eadjacent sections as seen in Figure 2. "For producing watertight jointat these interlocked end flan es there are securely lodged in the bend oeach hook flange a packing strip, 70, preferably made of flax ikematerial negligibly Asub'ect to deterioration by compression or oxiation; 'and the parts are dimensioned so that some compression of thispacking is caused in drawing the cover sections `of the two seriestogetherV and locking them at their meeting ed es as hereinafterdescribed. I t will be understood, also, from the foregoing description,that the contiuations along the edges of the down-turned channeled endportions of said sections results in similar locking of said flanesthroughoutthe entire continuous edges 'of t ese sect1ons,-both thehorizontal portions extending across the hatch opening and the edges-ofthe down-turned channeled ends. The tracks, 13 and 14, are very slightlydivergent from the lower ends,-at the outer ends of the hatchopening,-to the upper ends,- at the middle of the hatch open1ng,- wherethe two halves of the total cover meet, this divergence being for thepurpose of causing the hatch cover vsections to be free for slidingrespectively upon said tracks and upon'eac other in the opening andclosing movement, but to become uite tightly engaged and seated on saidtrac s at the finish of said closing movement. This slight divergence ofthe tracks may be seen exaggerated in Figure 2. v

For the 'same purpose, viz, facilitating the closing movement whileinsuring close lap and 'affording them guidance in their extendinlgandclosmg movement account must be ta en of the successively higherposition of the horizontal shoulders and the successively outwardposition of the vertical sides of the channel portions of the endmembers of said sections, due to their lapping successively upon oneanother; and this is provided for by forming the said tracks in what maybe called horizontal steps or offsets, forming shoulders, 13", and 14,and with successive `longitudinal Aportions stepped vertically as seenat 13", and 14".

The foregoing and following description, it will be understood, appliesequally to both sides of the hatch and to both down-turned ends of thecover sections.

In view of the fact that the upper or inner meeting cover' sections, 34,have no downturned hooks for engagement with any underlying part, andare therefore to a certain extent free for upward and downward movementat said edges, it is desirable to provide some4 other means for checkingsuch movement and uidin said cover sections in their initial sli ing colapsing movement for telescoping with the next lower` section. This 1staken care of by mounting upon the inner side of the depending ends ofthe section, 34, brackets, 34S, upon which there are mounted rollers,34', positioned for engaging' under the horizontal shoulders of thechannels of' the next cover section, 33, as may be seen in Figure 7.

` For operating the cover sections to extend the cover to hatchedposition and to collapse it to ,open position there is provided for eachhalf of the cover an endless flexible movement-communicating member suchas a chain or cable, 50, passing around proper wheels, 51, and 52, atthemiddle and ends respectively of the hatch opening, either of whichlwheels may be connected for application of power for rotating it todrive the endless flexible member, 50. As illustrated, the `drivingpower is applied to the wheel, 52, at the end of the hatch. said wheelbeing fast on a shaft, 53, ext-ending across the hatch and journaled inthe lateral coamings, on which shaft there l scription.

is mounted loose for relative rotation aiworm wheel, 54, adapted to bedriven by a worinl (not shown) connected with reversible driving means,(not shown), and adapted to be clutched tothe shaft, 53, by a clutchsleeve, 55, on said shaft arranged to be operated by a clutch pedal, 56,requiring no further de- The endless flexible driving inember, 50, isattached to the outer section, 34.

of the telescoped cover sections as indicated at 57; which is a stopprojecting inward from the bracket, 34S, above mentioned, mounted forcarryingr the roller, 34. At their open positions all the cover sectionsare telescoped together as seen in Figure 6, and when -the,

hatch is to be closed, power being applied to rotate the worin wheel,52, in the proper direction, the shaft, 53, being clutched to saidwheel, the upper ply of the cable carri-es the cover section, 34, inwarduntil its in-turned hook flange, 80, engages the out-turned hook flange,80, of the next cover section, 33, and

draws the latter in closing direction until its inturned hook 80,engages the out-turned hook flange, 80, of the cover section, 32, whichin turn and in like manner engages and draws the last section, 31, fordrawing its downturned flange, 80, tightly against the end coaming, 1,by the time the first section, 34, is at closed position ready to be'locked to the corresponding section, 34, of the other half of thecover. which will have been or may be similarly operated for closing.

For locking together water-tight at their meeting edges the co-operatingsections, 34, drawn thus together from opposite ends of the hatch, anyconvenient form of locking device may be provided. The drawing shows inFigures 9, 10, 11, l2 and 13 a simple and conveniently operated lockconsisting of a shaft, 60, journaled at each end in forked brackets. 61,61, on one of the cover sections, 34, the shaft having its ends whichprotrude beyond the inner fork members of the brackets cut away at oneside, reducing it in cross section to somewhat less than a 180o segment,as seen at 60B. The other cover section, 34, is provided withco-operating brackets, 65, 65, which are mounted in position to projectbetween the fork members of the bracket, 61, at the closed-togetherposition of the two cover sections, 34, the brackets, 65, having each anoverhanging substantially semi-cir4 cular downwardly-open terminal, 65,registering as to its position of arcuate format closed-togetherposition of the cover sections with the. circular journal bearing on thebracket, 61, of the locking shaft, 60, whose segment end, 60", atunlocked position is at the lower side, and therefore in position toenter under the overhanging terminal, of the bracket-65, seen in Figure10'; whereupon the shaft, 60, being rocked by means of its operatinghandle, 60, through an angle of or more, the segments, 60h, are engagedunder the overhanging terminal, 65, of the' end coainings, 12.

It willbe observed that the wheels about which the propelling chain oreable,"50,'p`asses being outside the coaining,"ai'e closeenough theretoto be overhung and enclosed by the down-turned ends of the lowest andinner- Ymost of the cover sections, 31, and this'being in turn overhungby the neXt,and that by the third and soon tothe uppermost andvoute'rmost section, the wheels and both pliesof the chain orl cable areenclosed between'thecoamfl i ing and the dowiiturned ends of thej'coversection at the closed position'of the latter, so`v that the wheels andendless propeller are pro-` f tected from the water. which it is thepurpose of the cover section with the` packed inter-V locked hook edgesto exclude from the hatch. f

I claim 1. Closing means for hatches and like'floor Y mounted forsliding on the coaming successively overlapping one anotherlongitudinally of the hatch, said lapping edges having hook lflangesadapted to interlock at closed position of the cover sections, and meansinterposed in the hook flanges for water-tight interlocking of said hookflanges of theconsecutive cover sections.

2. In the construction defined in claim 1, the cover sections havingdown-turned ends for embracing between them both the opposite sides ofthe coaming,'the hook flanges extending throughout the edges of saiddownturned ends which are continuous with the horizontal edges of thesections having said hook flanges.

3. In the construction defined 'in claim .1,

the cover sections havino` down-turned ends,

of said cover section having means for en gaging above and below saidtracks respec tively, said tracks being stepped so as to comprisesuccessive portions at different levels corresponding to the levels ofthe engaging means of said down-turned 'ends of the sev-,

eral cover sections respectively at hatch-closing position.

4. In the construction defined in claim 1,

at closed position corres ondingly to the-different distances of theown-turned ends of the hatch covers respectively from the coam- 16 'ng,due to their successively increasing dimensions for embracing oneanother.

5. Closing means for hatches and like floor openings comprising incombination with a hatch coaming a pluralit` of cover sections 20mounted for sliding on t e coaming successively overlapping one anotherlongitudinall of the hatch, said cover sections having .own-turned'endsfor embracing between them both opposite sides of the 4coaming, vthelapping ed ofthe adjacent sections having return-ben hooklanges adaptedto interlock by hooking into each other at closed position of the coversection, said hook flanges extending throughout the edges of said adja`so cent sections and being continuous with the longitudinal` sectionshaving said hook flanges.

openings comprising in combination with a 36 hatch coaming a pluralityof cover sections mounted for sliding on the coaming successivelyoverlapping one another longitudinally ofthe hatch, said cover sectionshaving vdown-turned ends for embracing between 407 them the oppositesides of the coaming, two guide tracks mounted one above the other uponthe outer sides of said coaming, the

Closing meansl for hatches and like floor' down-turned ends of theinnermost of saidy lapping cover sections having means "for enf gagingabove and below said tracks respeci" tively, and the successive coversections hav?" ing respectively similar means for engaging above andbelow the next `preceding `cover sections, said twoguide tracks beingslightly divergent from the outer end 'tothe middle of the hatch,whereby in the extension of the cover to closing position, said coversbecome l f I successively clamped upon each other and upon theguidetracks. 1'

7. Closing means for hatches and like floor openings comprising incombination with a hatch coaming a plurality of cover sections mountedvfor sliding on the coaming successively overlapping one anotherlongitudinally of the hatch, said cover sections having down-turned endsfor embracing between them both the opposite sides of the coaming, means`for propelling the cover sections from openposition 1n hatch-closingdirection, said means extending the length of the successively lappedseries of cover sections, means actuating said propelling meanspositively connected with the last outer-lapped cover section, andactuating means for said propelling means engaged therewith at the endof the series of cover sections at which they are assembled in openposition; the propelling means consisting of an endless powertransmission member, and driving and carrying wheels about which ittravels, 'said wheels -being mounted for rotation outside the coaming,and said endless power transmitting member extending outside the coamingand inside said down-turned ends of the cover sections.

In testimony whereof, Iy have hereunto set my hand at Chicago, Illinois,this 25th day of January, 1927. v

l JAMES F. MACKIN. i

